$ ./bin/elasticsearch-setup-passwords auto
Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
The passwords will be randomly generated and printed to the console.
Please confirm that you would like to continue [y/N]y
Changed password for user apm_system
PASSWORD apm_system = ...略...
Changed password for user kibana
PASSWORD kibana = ...略...
Changed password for user logstash_system
PASSWORD logstash_system = ...略...
Changed password for user beats_system
PASSWORD beats_system = ...略...
Changed password for user remote_monitoring_user
PASSWORD remote_monitoring_user = ...略...
Changed password for user elastic
PASSWORD elastic = ...今回使うのはこれ...